#pragma once

#include <iostream>
#include <cstring>
#include <unistd.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/socket.h>
#include <arpa/inet.h>
#include <netinet/in.h>
#include "log.hpp"

enum
{
    SocketErr = 2,
    BindErr,
    ListenErr
};

const int backlog = 10;

class Sock
{
public:
    Sock()
    {}
    ~Sock()
    {}
public:
    void Socket()
    {
        sockfd_ = socket(AF_INET,SOCK_STREAM,0);

        if (sockfd_ < 0)
        {
            lg(Fatal,"socket error, %s : %d",strerror(errno),errno);
            exit(SocketErr);
        }
    }

    void Bind(uint16_t port)
    {
        struct sockaddr_in local;
        memset(&local,0,sizeof(local));

        local.sin_family = AF_INET;
        local.sin_port = htons(port);
        local.sin_addr.s_addr = INADDR_ANY;

        if (bind(sockfd_,(sockaddr*)&local,sizeof(local)) < 0)
        {
            lg(Fatal,"socker error, %s : %d",strerror(errno),errno);
            exit(BindErr);
        }
    }

    void Listen()
    {
        if (listen(sockfd_,backlog) < 0)
        {
            lg(Fatal,"listen error, %s : %d",strerror(errno),errno);
            exit(ListenErr);
        }
    }

    int Accept(std::string* clientip,uint16_t *clientport)
    {
        struct sockaddr_in peer;
        socklen_t len = sizeof(peer);
        int newfd = accept(sockfd_,(struct sockaddr*)&peer,&len);

        if (newfd < 0)
        {
            lg(Warning,"accept error, %s : %d",strerror(errno),errno);
            return -1;
        }

        char ipstr[64];
        *clientport = ntohs(peer.sin_port);
        inet_ntop(AF_INET,&peer.sin_addr,ipstr,sizeof(ipstr));
        *clientip = ipstr;

        return newfd;
    }

    void Close()
    {
        close(sockfd_);
    }

    int Fd()
    {
        return sockfd_;
    }

    bool Connect(const std::string& ip,uint16_t port)
    {
        struct sockaddr_in peer;
        memset(&peer,0,sizeof(peer));
        peer.sin_family = AF_INET;
        peer.sin_port = htons(port);
        inet_pton(AF_INET,ip.c_str(),&peer.sin_addr);

        int n = connect(sockfd_,(sockaddr*)&peer,sizeof(peer));
        if (n == -1)
        {
            std::cerr << "connect to " << ip << ":" << port << std::endl;
            return false;
        }

        return true;
    }
private:
    int sockfd_;
};
